Abstract
Elastic metamaterials (EMMs) can attenuate surface Rayleigh waves effectively, However, it still hard to put EMMs in practical engineering applications. To overcome this limitation, specific combinations of effective parameters for Rayleigh waves isolation have been determined based on propagation behavior of Rayleigh waves in the semi-infinite EMM. Then, unit cell with negative hybrid bands has been designed to satisfy the requirements of effective parameters. Finally, a new type of metamaterial surface (MMS) was proposed to isolate Rayleigh waves, numerical results show that the peak value of acceleration on surface with proposed MMS can be decreased by 97.2% under seismic wave.
Credit authorship contribution statement
All authors contributed equally.
Data availability statement
Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.
Disclosure statement
No potential conflict of interest was reported by the authors.